81306687

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1\times {\mathrm{919}}^1$

素因数の和:1323

約数の個数: 32

約数和(自身を含む): 135659520

約数和(自身を除く): 54352833

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 383, 919, 1149, 2681, 2757, 4213, 6433, 8043, 10109, 12639, 19299, 29491, 30327, 70763, 88473, 212289, 351977, 1055931, 2463839, 3871747, 7391517, 11615241, 27102229, 81306687]

約数ペア:

[(1, 81306687), (3, 27102229), (7, 11615241), (11, 7391517), (21, 3871747), (33, 2463839), (77, 1055931), (231, 351977), (383, 212289), (919, 88473), (1149, 70763), (2681, 30327), (2757, 29491), (4213, 19299), (6433, 12639), (8043, 10109)]